• India – smooth cutting aluminum oxide abrasive, our patent for a fine finish for long lasting cutting edge; The choice of artisans, craftsmen and mechanics; Ideal for clean deburring, generating keen edges and quality finishes • Benchstones are ideal for hand dimensioning and sharpening of all types of knives, plane blades, chisels, scrapers, or any other tool that needs a flat, sharp edge • Coarse and fine grit aluminum oxide abrasive surfaces produce strong, keen, long lasting edges on quality tools • The use of oil with sharpening stones enhance the sharpening action and minimize the clogging of the stone’s surface • Norton Sharpening Stones have been the world leader for over 150 years